Using a Javascript variable inside a php block

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Pass a PHP string to a Javascript variable (including escaping newlines)
Access a JavaScript variable from PHP

I have a Javascript function that takes in one variable. The function has some php code inside it. I want to use this variable inside the php section of the function. I couldn't get it to work. How is it done?

No-can-do, boss, at least not the way I think you're thinking :-) The PHP is being interpreted on the server before it's sent to the client. You can use PHP to populate a javascript variable directly, but going the other direction requires some kind of AJAX post. — rjz, Mar 05 '12 at 05:56
this type of question is all over the web, please google it first — t q, Mar 05 '12 at 05:58
http://stackoverflow.com/questions/2338942/access-a-javascript-variable-from-php#answers-header — sandeep, Mar 05 '12 at 06:09

score 1 · Answer 1 · answered Mar 05 '12 at 05:57

1

The issue is that your PHP code is being rendered on the server before being served to the client. I would recommend either converting the PHP code into Javascript code or creating an AJAX call to the PHP function.

answered Mar 05 '12 at 05:57

seeming.amusing

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score 0 · Answer 2 · answered Mar 05 '12 at 05:58

0

Start reading about AJAX! You will likely need to rewrite some of the code you have written but what you are attempting to accomplish is not really possible otherwise.

answered Mar 05 '12 at 05:58

Ryan Kempt

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How easy is it to do with AJAX? – node ninja Mar 06 '12 at 20:49
It is simple once you get used to it, you will definitely need to do some reading and learning but it is fairly simplistic once you have done it a few times. – Ryan Kempt Mar 06 '12 at 21:01

score 0 · Answer 3 · edited Mar 05 '12 at 06:10

0

try with it

<script>
    var whatever = "<?php echo $phpVar ?>";
</script>

edited Mar 05 '12 at 06:10

epascarello

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answered Mar 05 '12 at 05:59

thecodedeveloper.com

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Using a Javascript variable inside a php block

3 Answers3